Questions tagged [cpu]

The part of a computer responsible for performing computations, often referred to as a processor.

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Intermittent turn on fault with laptop

I have a PCSpecialist laptop (custom built/cheap chinese barebone parts). The laptop is three years old and has been used for fairly intensive gaming without 'good' cooling. The laptop has an ...
6 votes
1 answer
3k views

Is Firefox 57 multithreaded?

According to Multiprocess Firefox on MDN, Firefox 57 finally runs things in different processes. So is Firefox 57 multithreaded? In particular, how many cores does it use at most? Say I open 20 tabs ...
1 vote
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PC always crashes when trying to wake; then won't even POST until CPU and CPU fan are re-seated

Around 2 months ago, my desktop crashed and would not POST. I went through the normal steps, including completely reassembling and disassembling the computer, and after reassembly it would boot again. ...
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1 answer
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Conroe stepping

I have two Intel Xeon 3050 CPUs which apparently have different stepping, I'd like to know which is better but am having difficulty finding specific stepping level info. sSPEC: SL9TY CPUID: 06F6h ...
0 votes
1 answer
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is it ok to run high CPU performance needing software all the time?

I have acre aspire laptop with Intel core i3-370M prossesor with 3.6 gb ram. I want to use IntelJ software for developing in java on this laptop. When I ran this software it run little bit slowly but ...
-1 votes
1 answer
945 views

What is better for a host server for web servers - more threads/cores or bigger CPU? [closed]

Let's say I have 5 VMs (4 tomcat servers and one db). Not very crowdy (100 distinct users at peak hours). I'm wondering is it better to have e.g. 3GHz CPU with 4 cores or 2GHz with 8 cores? Also ...
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2k views

Is laptop CPU running at constant Turbo Clock speed bad?

I'm not exactly sure why, but since yesterday, my laptop CPU has been running at its turbo clock speed, constantly, when idle and no applications are open. In task manager, my CPU usage is below 10%, ...
2 votes
3 answers
5k views

Homogeneous cores and heterogeneous cores

I am currently reading up on multi-core architecture for CPUs. However, I am having difficulties understand the meaning of "using one core design repeated consistently" which describes homogeneous ...
4 votes
2 answers
27k views

Can i use cleaning alcohol 90% to remove thermal paste on the cpu?

Do i need to buy Arctic Silver cleaner to clean off the thermal paste of the cpu? Can i remove it with a cleaning alcohol or even antistatic cleaner?
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How do I find comparable benchmarks between LG G4's processor and Xeon x5675 [duplicate]

My friend said that a modern phone's CPU will be more powerful than an old PC's CPU. So to test, I have a Qualcomm Snapdragon 808 processor in my LG G4 phone. My PC has a Xeon x5675 processor, which ...
1 vote
1 answer
270 views

Hardware for a backup and virtual machine server

I am planning to build a server that will act as a file and backup server. And I might need to run virtual machines on it in the future, but I am not sure of this yet, so I will be composing two ...
0 votes
2 answers
535 views

Unlocked Phenom II X2 vs. Athlon II X4 performance

I have a friend who is debating what kind of CPU he wants for his MSI 880GMA-E45 motherboard. There's the option of getting an Athlon quad-core, but seeing as the board has capabilities to unlock ...
1 vote
2 answers
6k views

Old AMD on Windows 7 64-bit; is Cool'n'Quiet possible?

Can I enable Cool'n'Quiet on my old AMD processor on Windows 7 64-bit? If so, do I need a separate driver (like Windows XP) or I only have to modify some options? The processor is an AMD Athlon 64 ...
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1 answer
3k views

Reaching nearly 80C on CPU two minutes after boot

I seem to have a weird issue with my CPU possibly achieving strangely high temperatures right after booting. The problem is, I get different temp results on several different pieces of software. Is ...
2 votes
0 answers
4k views

How to run multi core using jupyter in ubuntu server?

I have a ubuntu server. it is have a dual xeon E5-2620V4(32 core). The problem is that when running code in "Jupyter notebook", only one of the 32 cores works. So the execution time is very long. ...
4 votes
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608 views

Since upgrade from linux 4.6 to (4.7, 4.8), %CPU is always 0; the frequency is unknown

Since the upgrade to linux kernel 4.7 (Debian Stretch), it seems that my system (Aurora-R4 i7 3820) is a bit slower (short hangs sometimes) and the most strange thing is that I can't see anymore the ...
1 vote
2 answers
1k views

How are PCI lanes used for graphics and peripherals (eg PCI-e SSD) respectively?

The Skylake architecture supports 16 PCI-E lanes from the CPU and 20 from the PCH. Are the 20 from the Z170 chipset separate from the 16 that allow the CPU to communicate with the GPU(s)? Or is the ...
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2 answers
18k views

intel_rapl driver does not support CPU family 6 model 28

I am trying to install Remix OS on my eMachines eM250 KAV60, but at boot time that error pops up. I've tried to do other stuff but it just keeps loading indefinitely. I can provide more info, just ask ...
48 votes
5 answers
50k views

Why is Google Drive so heavy on my CPU?

As the below screenshot shows, despite the fact that Google drive doesn't appear to be doing anything (it's not syncing any data) it's using over 12% of my CPU (a core i7). The official documentation ...
1 vote
3 answers
8k views

CPU usage 99% constantly

My computer is running windows 8, and suddenly started running slowly. When I open the task manager, it tells me that the CPU is using 99% - sometimes the disk usages jumps up as well. The strange ...
0 votes
1 answer
763 views

cpu suddenly overheating - can it be software/firmware related?

My HP Omen laptop freezes completely from time to time. I've done a lot of research and investigation before posting this question. I finally found something specific that might well explains the ...
-1 votes
1 answer
46 views

Should I use my GeForce GPU if I can run the game on Intel HD?

If the game is an old game and runs with Intel HD graphics, is it a good idea to run the game using Intel HD. Or should I still run it on the GeForce card, since the GeForce card is made for running ...
3 votes
3 answers
6k views

How to maintain Lower CPU Temperature

1) How to maintain low CPU temperature ?. 2) What are the factors that cause high CPU Temperature ? 3) what are the chances of damaging my motherboard due to excessive heat released from processor, ...
0 votes
1 answer
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What are the implications of "strain on the memory controller"?

Numerous articles and postings advise using as few memory sticks as possible, and/or using registered memory for configurations with many sticks, citing "strain on the memory controller". I am ...
3 votes
0 answers
68 views

Can I tell how much multi-threading I'm using each day?

Is there a way to determine (or even better, to log) how much benefit I'm getting from my computer's multi-threading capabilities? Background: My higher-ups are proposing to give me and my team new ...
1 vote
1 answer
423 views

CPU performance in task manager is 100%

Here is my problem: I was playing some games in my desktop, so i got bored from these games so i decided to get new motherboard, i got my new motherboard and all installed all my specs including a new ...
0 votes
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72 views

CPU Downclocks When Mouse Is Moved

My CPU is Intel i7 6700, I have speed step and all c states enabled. The spec says it can down clock to 0.7 when idle, but for me on a fresh Windows 10 install it ranges between 1.5-1.9. However, if ...
1 vote
1 answer
542 views

Windows8, taskhost.exe consuming CPU cycle for hours

I notice this process 'taskhost.exe' has been running continous on my laptop for hours. It continues running even after I close the lid and reopen it. I tried using processexplorer to see what it is ...
1 vote
0 answers
146 views

How to run executable without specific CPU flags?

I'd like to test the behavior of an Linux ELF executable on a processor that doesn't have some CPU flags such as aes and sse2 given a processor that has those flags. What is the simplest way to ...
-1 votes
2 answers
120 views

CPU running slower than normal - and hotter

Some liquid got spilled on my PC. I cleaned it up but when trying to turn it on I noticed that there were some drops of water on the CPU (AMD). The PC wouldn't turn on - it would start up, but nothing ...
-1 votes
2 answers
286 views

What is a computation period? [closed]

In my textbook Operating Systems: Internals and Design Principles (Seventh Edition) by William Stallings I am confused by what the first problem (#2.1) on page 104 means by "period". Here is the ...
2 votes
1 answer
259 views

Older laptop stuck in low-power state on Windows boot

I'm currently servicing an about 10 year old Packard Bell Easynote MX45 which I upgraded with a SSD and Windows 10 (Windows 7 and Vista before). The issue is that the CPU doesn't clock up when ...
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svchost high CPU/memory and wuauclt high memory on each startup [duplicate]

Every time I start up this windows XP laptop (lenovo t60), the svchost and wuauclt processes take up ~200,000k memory each. in addition, svchost takes ~50% of cpu power. Is there any way to alleviate ...
7 votes
3 answers
7k views

How change CPU multiplier on Lenovo Intel processor?

I bought new Lenovo laptop a week ago. At first it works very well but then suddenly it started to work very slowly. After installing CPU-Z, I found that the CPU multiplier is set to 4 (from 28). I ...
-2 votes
1 answer
3k views

How many stacks are there in a processor? [closed]

I am learning about CPU and memory interactions in my Operating Systems class and have been confused about how the memory stack works. I understand that the stack goes down one line at a time and ...
0 votes
0 answers
116 views

Thresholds for CPU to switch from sleep or idle to nominal or max frequencies?

I'm trying to understand some benchmark results I am seeing for two security libraries I use. When I run the benchmarks I notice the first several test are slower than expected. Here, slower means ...
2 votes
0 answers
2k views

How do I underclock my Macbook AIR?

When my MacBook gets below 1% battery life I believe the CPU slows down. The battery indicator states I have 10 minutes left but those are the longest 10 minutes in the laptop cycle. Is there a way to ...
0 votes
1 answer
812 views

Cooler Master Hyper TX3 evo push pins

I've failed to install the Cooler Master hyper TX3 evo fan on ASRock X79 extreme9 motherboard (CPU is Intel Core i7 3820 if that would help). I'm sure that I followed the manual right the problem is ...
9 votes
1 answer
11k views

Is there a technical reason for Intel VT-x being disabled by default on some motherboards?

Intel VT-x is an instruction set that facilitates virtualization. From Wikipedia The CPU flag for VT-x capability is "vmx" [...] "vmx" stands for Virtual Machine Extensions, which adds ten new ...
-2 votes
2 answers
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I've two computers.. But which one I keep? which one is better? HP vs Asus [closed]

I've two computers Asus and Hp: HP EliteBook 8560w has this configuration: Intel® Core™ i7-2630QM CPU @ 2.00GHz × 8 DDR3 8GiB NVIDIA Quadro 1000M avec 2 GB Asus G553V gamer has: Intel Core i5-...
2 votes
1 answer
90 views

Matching optimized for RAM not CPU consumption

I'm looking for different ways to get the row number of an identical cell in another range. One of the fastest ways is to use the Match function. When run across two very large ranges (upwards of ...
0 votes
1 answer
1k views

GIGABYTE AB350 Gaming poorly configurable BIOS?

I recently purchased the AB350 Gaming (not Gaming 3) board, and I was dismayed to discover that the BIOS appears to be locked into what seems like an 'easy mode', with more than half the features I ...
3 votes
3 answers
11k views

How is CPU clock rate maintained?

I was reading an article Clock rate from wikipedia which has to say that: The clock rate typically refers to the frequency that a CPU is running at. The clock rate of a CPU is normally determined ...
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1 answer
2k views

Difference between Memory Buffer Register and Program Counter

I am confused by the difference between the CPU memory buffer register and the program counter. The MBR holds contents and instructions from memory. The program counter stores the next instruction to ...
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0 answers
200 views

My cpu won't turn on after some frequent power cut (load shedding)

My computer won't turn on in general, but if I give it some time, say I wait for 2-3 hours and then press the power button, it works fine. It was running perfectly until there was some frequent load ...
52 votes
1 answer
254k views

What happens if I use RAM of a faster speed than the CPU supports?

Looking at the Intel E3-1230v2 CPU, under Memory types it says "DDR3-1333/1600". My question is, in what way does the CPU limit the RAM speed? What would happen if I put in a DDR3-2133 RAM chip ...
0 votes
1 answer
877 views

Turbo Boost is not working, for Intel core i7 CPU

Recently I changed the motherboard of my laptop (hp envy 15t-j100) with new one, the laptop is working good. But the processor (core i7 4700 MQ) now does not run in turbo boost mode any more, the task ...
3 votes
3 answers
14k views

How does Triple Channel memory differ from Single or Dual?

I'm trying to understand the PHYSICAL difference on the motherboard when it comes to single, dual, triple and quad channel memory. I have a mobo that has 4 black memory slots, each one contains 4GB ...
0 votes
1 answer
171 views

Why is POW mining process not affecting PC performance?

So I've been using this site, Moon Bitcoin for a little while (it's a faucet), and recently they have added a feature to do some bitcoin mining in the background, to increase the amount of bitcoin you ...
3 votes
4 answers
5k views

Hypothetically, can I swap processors between a smartphone & a desktop?

When manufacturers mention the speeds of smartphone processors, is it right in my understanding that the speeds between smartphone processors and desktop processors are comparable? In other words, ...

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